Amps supply more power into 4Ohms than 8. Check your amps specs and you will see this is true. Beware of low impedance loads with SET's, howevever. A sensitive 8Ohm speaker like the Soliloquiy's is the trick in this case.
speaker effiency
hello can someone please tell why speakers with the same effiency, mind you different in that one is 4 ohm the other 8 ohm, that one would play loader then the other.the one that is 4ohm (thiel cs1.2 )is the one that plays loader. the other is gershman x-1.also next week i am adding the sw-1 sub.it is a passive sub.it has the same effiency as the others 87 or 88.my amp is ocm 200 (100 wpc ).will it get worse (if that's the word )